Journal of Petroleum and Sedimentary Geology

Korean Society of Petroleum and Sedimentary Geology

J Pet Sediment Geol 2(1):24-35

eISSN: 2635-7704

DOI: https://doi.org/10.31697/jpsg.2020.2.1.24

Article

서캐나다 셰일가스 분지별 맞춤형 생산성 향상 솔루션을 위한 암석역학적 특성 연구

최준형¹, 이현석¹, 김유리¹, 김정현², 이대성²^,^*

A study on increase the productivity optimization solution using characteristics of geomechanical property in Western Canada Shale Basin

Junhyung Choi¹, Hyun Suk Lee¹, Yuri Kim¹, Jeonghyun Kim², Dae Sung Lee²^,^*

^*Corresponding Author : Dae Sung Lee, Tel: +82-51-200-7770, Fax: +82-51-200-7771, E-mail: leeds@dau.ac.kr

ⓒ Copyright 2020 Korean Society of Petroleum and Sedimentary Geology. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permit unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Jul 14, 2020 ; Revised: Sep 08, 2020 ; Accepted: Sep 15, 2020

Published Online: Dec 01, 2020

요약

방향성 시추 및 다단계 완결시스템을 이용한 수압파쇄와 같은 신기술의 발달로 서부 캐나다에서의 셰일가스 생산이 늘어나고 있다. 성공적인 시추와 저류층 자극을 위해서는 분지별 암석역학적 물성 및 취성도 지수를 기초로 한 차별화된 개발 방법이 필요하다. 본 연구에서는 서부 캐나다 셰일가스 개발 유망지역인 몬트니 분지와 리아드 분지 시추공 자료를 활용하여 암석역학적 물성 및 취성도 지수 분석을 실시하였다. 이 두 분지 모두 개발에 적합한 총유기탄소 함량 및 암석역학적 물성을 가지고 있어 셰일가스 저류층으로서의 큰 개발 잠재력을 보이고 있다. 특히 몬트니 분지의 몬트니 지층과 리아드 분지의 베사리버 지층의 경우 영률 40 GPa 이상, 포아송비 0.15 이하로 수압파쇄에 적합한 취성 특성을 보이는 높은 영률과 낮은 포아송비를 보인다. 이와 같은 암석역학적 특성으로 인해 셰일가스 개발에 필요한 자극기술 중 하나인 수압파쇄 기술 적용이 용이할 것으로 판단된다.

ABSTRACT

The shale gas production has increased in Western Canada due to development of new technologies for directional drilling and hydraulic fracturing using multistage completion system. The customized development method based on geomechanical properties and brittleness index for each shale play is necessary for successful implementation of drilling and reservoir stimulation. In this study two prospective shale plays, the Montney and Liard basins in Western Canada, has selected for geomechanical properties and brittleness index from available wellbore data. As the result of this study, these two basins has high TOC, optimal geomechanical property and shows great development potential. Montney Formation in the Montney Basin and Besa River Formation in the Liard Basin show high Young’s modulus and low Poisson’s ratio, which is over 40 GPa, Young’s modulus and below 0.15, Poisson’s ratio. These rock properties of shale gas reservoirs play an important role in reservoir stimulation, especially in hydraulic fracturing.

Keywords: 비전통자원; 셰일가스; 지오미케닉스; 특성화; 취성도 지수

Keywords: unconventional resource; shale gas; geomechanics; characterization; brittleness index

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